Re: [GIT PULL v2 rcu/next] RCU commits for v5.7

From: Ingo Molnar
Date: Tue Mar 24 2020 - 05:11:31 EST



* Paul E. McKenney <paulmck@xxxxxxxxxx> wrote:

> Hello, Ingo!
>
> As discussed off-list, my earlier RCU pull request contained a commit with
> KCSAN dependencies, which caused build failures in the absence of KCSAN.
> These dependencies went undetected due to a flaw in my testing process
> that erroneously included the KCSAN commits. This revised pull request
> removes those dependencies by pushing them to the post-v5.7 of the
> -rcu tree. Non-KCSAN builds are unaffected.
>
> As before, this pull request contains the following changes:
>
> 1. Documentation updates.
>
> https://lore.kernel.org/lkml/20200214233848.GA12744@paulmck-ThinkPad-P72
>
> 2. Miscellaneous fixes.
>
> https://lore.kernel.org/lkml/20200214235536.GA13364@paulmck-ThinkPad-P72
>
> 3. Make kfree_rcu() use kfree_bulk() for added performance.
>
> https://lore.kernel.org/lkml/20200215000031.GA14315@paulmck-ThinkPad-P72
>
> 4. Locking torture-test updates.
>
> https://lore.kernel.org/lkml/20200215000312.GA14585@paulmck-ThinkPad-P72
>
> 5. Callback-overload handling updates.
>
> https://lore.kernel.org/lkml/20200215001816.GA15284@paulmck-ThinkPad-P72
>
> 6. Tasks-RCU KCSAN and sparse updates.
>
> https://lore.kernel.org/lkml/20200215002446.GA15663@paulmck-ThinkPad-P72
>
> 7. SRCU updates.
>
> https://lore.kernel.org/lkml/20200215002907.GA15895@paulmck-ThinkPad-P72
>
> 8. Torture-test updates.
>
> https://lore.kernel.org/lkml/20200215003634.GA16227@paulmck-ThinkPad-P72
>
> All of these have been subjected to the kbuild test robot testing,
> will get -next testing in the next -next, and are available in the git
> repository at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git for-mingo
>
> for you to fetch changes up to aa93ec620be378cce1454286122915533ff8fa48:
>
> Merge branches 'doc.2020.02.27a', 'fixes.2020.03.21a', 'kfree_rcu.2020.02.20a', 'locktorture.2020.02.20a', 'ovld.2020.02.20a', 'rcu-tasks.2020.02.20a', 'srcu.2020.02.20a' and 'torture.2020.02.20a' into HEAD (2020-03-21 17:15:11 -0700)
>
> There is a modest increase in code size of about 700 lines. About 300
> of these added lines were documentation, almost 200 more from adding
> kfree_bulk() support to kfree_rcu(), about 150 from torture-test
> improvements, and about 80 lines from improved callback-overload handling.
> All in all, good value from this expansion.

> 34 files changed, 1015 insertions(+), 294 deletions(-)

Pulled, thanks a lot Paul!

Ingo